Impbovement in tanning



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, .SLEEECIFICIATIOS". TO ALL WHOM I'll MAI CONCERN: I

Be it known that I, IRA WO0D, of Woodstock, county of Windsor, and State ofVermont, have invented a new and useful improved Tanning Mixture; and I do hereby declare that the following is a full, clear, and exact'description thereof, which will enable others skilled in the art to make and, use the some.

The present invention relates to a new and improved mixture for tanuing gloye calf, or buck skins, and other hides, which mixture is composed of the ingredients and mixed together in and about the proportions as will be now stated: 7 lbs. of alum 3lbs. of glanber salt (refined); 4 lbs. oi" rook salt; 10 lgalls. of soft water;

5 lbs. of ground sumac; 3 lbs. of oak bark; 1 lb of ground nutgall; 4 oz, o'i'voil of ditrioi.

The alum, glaub'er salt, and rock salt, in or about the proportions above named, are first reduced to a fine pow, der by pounding, or grinding, or in any other suitable manner, and then afterwards hdiled in the ten gallons, more i or less, of soft water, by means of a. brass, copper, or other suitable kettle. sumac, oali hark, and nutgolls are then mixed together and boiled smartly'for twenty minutes, more or less, when, straining such mixture whileliot in any suitable manner over'the alum and soltsmixed together as has been heroin above stated, the four ounces of the oil oi vitriol are then added, stirring constantly until all are fully dissolved. In the liquid mixture produced from the ingredients mixed together in or about the proportions above stated, place the skius to be tanned while such liquid is at a blood heat a: nearly so. stirring them constantly for about an: hour, after wbich crowd" them d0\vn;-so that they will be entirely covered by the liquid, where let them remain for about twenty-four hours, more or less. The skins are then ready to be removed, and being allowed to drip, they are set upon both sides, using a glass slicker for the grain side. A heavy coat of lard oil is then applied to both sides,when, hanging the skins on hooks in a warm place, they are allowed to dry, thus completing the tanning. With a tanning mixture composed of the ingredients herein above named, skins can be tanned quicker than by any other mixture used, and in such a manner as to beiready to receive any color desired, be itscarlet, purple, or

black, these named being most employed. If the skin is to be .colored black, nothing more is needed beyond the tanning except something suitable for settling the color to make it permanent, the tanning mixtureembraced in this invention possessing an advantage over all methods of tanning in these particulars more especially, that the color will never fade, even if exposed to the sun, that leather can be tanned by it in the quickest and cheapest manner possible, rendering it impervious to moisture or cold. From the above description it is plain to be seen that by my improved tanning mixture a leather can be produced which possesses features never before givento leather in any of the modes or processes of tanning new in common use.

I claim as new, and desire to secure by Letters Patenta v The tanning mixture composed of the ingredients inixed'together in and about the proportions herein stated, and substantially as and for the purpose described. i '1 also claim the leather as a new article of manufacture, produced substantiallyos hereindescribed. The above specification of my invention signed by me this seventh day of September, 1866. l IRA WOOD.

., Witnesses: r i t,

Nonmu PAUL, Ounces G. Frrcn. 

